Tag: adjustable power supply from usb port

As in the title Power supply from usb port, the power supply circuit using a source from USB port, with an adjustable stabilizer can be obtained voltage from 1.25V to 3.75V. USB port can give power to peripherals of 500 mA at 5 V ± 5%. The USB port can be used to power external circuitry, which is useful when no other constant voltage source. (more…)